CVE-2017-18257

MEDIUM

Description

The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b86e33075ed1909d8002745b56ecf73b833db143

https://github.com/torvalds/linux/commit/b86e33075ed1909d8002745b56ecf73b833db143

https://usn.ubuntu.com/3696-1/

https://usn.ubuntu.com/3696-2/

https://www.debian.org/security/2018/dsa-4188

Details

Source: MITRE

Published: 2018-04-04

Updated: 2018-07-04

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM